Twill optical film capable of realizing 3D effect of naked eye of display screen and preparation method thereof
US11747522B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2023 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Mar 2, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B30/27
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure discloses a twill optical film capable of realizing a 3D effect of a naked eye of a display screen and a preparation method thereof. The preparation method of the twill optical film includes the steps of: step 1: coating a grating coating with a high refractive index on one side of a transparent base film using a micro-nano imprint technique, and curing same by ultraviolet to form a uniformly arranged columnar lens array; and obtaining a twill grating layer; step 2: coating a filling coating with a low refractive index on the twill grating layer and curing same by ultraviolet; placing same in an oven in an atmosphere with a relative humidity of 95-98% controlled by a saturated solution of ammonium dihydrogen phosphate; setting the temperature to 100-120° C., and thermally cross-linking same for 3-4 hours; and obtaining a twill optical film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.